Commonly confused
Sign in vs Sign up
“Sign in” and “Sign up” look alike but pull in different directions. Here is the quick way to tell them apart — with examples, the mistake to avoid, and a check.
Which one do you mean?
New account or existing one? Sign up creates a new account or membership; sign in logs into one you already have.
Sign in
Enter an account you already created (also called log in).
Sign up
Register for something new — a service, course, or newsletter.
sign in
- 1
Record arrival by signing
Correct use
“Visitors must sign in at reception.”
Visitors must record their arrival by signing the book at reception.
sign up
- 1
Officially register for a course, service or membership
Correct use
“She signed up for yoga classes.”
She added her name to the list for yoga classes.
Common mistake
I need to sign up to my email.
I need to sign in to my email.
You already have an email account, so you sign in.
Test yourself
“Visitors must sign in at reception.” What does it mean?
More pairs to tell apart
Sink In — iOS & Android
Stop mixing them up
Sink In turns confusable pairs like this into quick contrast drills, so the right particle becomes automatic instead of a guess.
- Learn the pattern behind dozens of verbs at once — not one-off translations.
- Spaced repetition (SM-2) brings each meaning back right before you forget.
- Four practice modes train recall and discrimination, not just recognition.
